Check out the improvements made to Derive Assembly, Derive Part, Make Part, and Simplify.
With this release, you can now cancel the preview of the oriented minimum bounding box when deriving a part, assembly, and when simplifying an assembly.
For more information see About Derived Parts and Assemblies.
Starting with release, you can now derive a solid body using oriented minimum bounding boxes. A new "Oriented minimum bounding box" option is added to the Options tab of the Derived Part, Derive Assembly and Make Part dialogs. By default, the option is checked. Uncheck the box to derive a body with orthogonal bounding boxes.
Also, representing the selected component in the derived part as an orthogonal bounding box is now available for parts. The option is added to the Derived Part and Make Part dialogs and you can be applied to a single body or the whole Solid Bodies folder.
For more information see To Create a Derived Part or Assembly.
As well as being able to use Minimum Orientation Bounding Boxes in the derive command, the option is also to the Simplify dialog. When "Replace with Envelopes" is set to "All in One Envelope", the "Edge A", "Edge B", and "Edge C" values can be set in the property panel and the graphics window.
A new "Create model parameters" option is added to Advanced Properties of the property panel. When selected, three read only parameters for the "Edge A", "Edge B", and "Edge C" are created in the simplified file parameters window.
For more information see Create a Simplified Part from an Assembly.